We confirmed that prospective isolatedMSCs showed a 120, 000-fold higher colony forming frequency thanthe conventional MSCs. Furthermore, Our results suggested that MSCs in adultbone marrow have at least two developmental origins, one of which is the neural crest. Furthermore, prospectively enrichedMSCs are a promising candidate for the efficient generation of high-quality iPS cells. This photocurable solution also has adequate viscosity at room temperature before curing, and it manipulation is enhanced. It is assumed that forms suitable for various bone defects will thus be easily rendered, and it is also assumed that the shape can be retained with the mechanical strength required by photocurable.